Umiejętności z tego działu sprawdza 25 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 21 z 57 arkuszy w bazie.
Cell organization enables specialized reactions, and life cycles transmit inherited information. (a) Outline three structural differences between eukaryotic and prokaryotic cells. (b) Outline advantages of dividing a cell into compartments. (c) Explain sexual…
During much of the follicular phase, which response illustrates negative feedback in the menstrual cycle? A. Moderate rising oestradiol suppresses further FSH secretion B. Falling progesterone directly produces a permanent LH surge C. FSH secretion forces the…
After fertilization, the first division of the human zygote normally takes place while it is in which labelled structure? A. Structure A B. Structure B C. Structure C D. Structure D
Suggest whether the chromosome counts most likely come from somatic cells or gametes, giving a reason.
List two structures where meiosis occurs in this plant.
(i) Define pollination. (ii) Outline how flowering plants can promote cross-pollination.
Biological function depends on coordinated structures and recurring processes. (a) Outline the roles and regulation of progesterone during the menstrual cycle. (b) Describe the polymerase chain reaction. (c) Explain how carbon is recycled through a terrestrial…
Which identifications match P, Q and R in this simplified male reproductive-system diagram? A. P: epididymis; Q: urethra; R: prostate B. P: testis; Q: sperm duct; R: seminal vesicle C. P: testis; Q: ureter; R: epididymis D. P: prostate; Q: sperm duct; R:…
In an apple variety, pollen sharing the relevant incompatibility specificity with the maternal plant is rejected. What is a reproductive benefit of this mechanism? A. It prevents all changes in allele frequency B. It ensures that every ovule is fertilised by…
Which event allows the maternal and paternal chromosomes to assemble on the first mitotic spindle after human fertilization? A. Both chromosome sets undergo a new meiotic division B. The pronuclear envelopes break down C. Paternal chromosomes are digested…
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